Koh, Yong-Gon
Lee, Jin-Ah
Lee, Hwa-Yong
Chun, Heoung-Jae
Kim, Hyo-Jeong
Kang, Kyoung-Tak
Article History
Received: 10 February 2019
Accepted: 8 July 2019
First Online: 16 July 2019
Ethics approval and consent to participate
: Approval was not required, as neither human participants nor animals were involved in this study.
: Not applicable.
: The authors declare that they have no competing interests.